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Sulfuric acid is a colorless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. It will char wood and mostanic matter on contact, but is unlikely to cause a fire.

An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. The effects of three factors, including CaOCl2 vs. NaOCl, OCl concentration, and HCl concentration on gold leaching performance were investigated.

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Up to now, with 500 mine EPC projects, 70 kinds of ores mining technologies and experience and 20 patents, Xinhai has established overseas offices in Sudan, Zimbabwe, Tanzania, Peru and Indonesia and exported to more than 20 countries.